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Las Briofitas. Bolivia Ecologica 59
Catagonium Müll. Hal. ex Broth. Search in The Plant ListSearch in Index Nominum Genericorum (ING)Search in NYBG Virtual HerbariumSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical Garden Decrease font Increase font Restore font
 

Published In: Die Natürlichen Pflanzenfamilien 1(3): 1087. 1908. (Nat. Pflanzenfam.) Name publication detailView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 2/9/2009)
Acceptance : Accepted
Notes     (Last Modified On 3/2/2014)
general taxon notes:
Catagonium is characterized by the soft glossy mats, leaves strongly complanate, 2-ranked and oblong-ovate with short piliferous to mucronate or emarginate apices, subauriculate leaf bases and short, mostly forked or occasionally single costae. Sporophytes are extremely rare. Given the rather fragile nature of the stems and leaves, reproduction is likely asexual via propagula. In the southern most range of montane forest found in central Bolivia, the yungas of Amboró, both species are abundant and equally common. Thoroughly treated by Lin (1984), Catagonium contains four species with a circum-Antarctica distribution, extending into the mountainous tropics; two species in the Neotropics.
 
Catagonium se caracteriza por las matas suaves brillantes, hojas marcadamente complanadas, en 2 hileras y oblongo-ovadas con ápices corto pilíferos a mucronados o emarginados, bases de las hojas subauriculadas y costa corta, generalmente bifurcada u ocasionalmente simple. Los esporofitos son extremadamente raros. Dada la naturaleza bastante frágil de los tallos y hojas, la reproducción probablemente es asexual via propágulos. En el extremo sur del bosque montano encontrado en el centro de Bolivia, los yungas de Amboró, ambas especies son abundantes e igualmente comunes. Revisado meticulosamente por Lin (1984), Catagonium contiene cuatro especies distribuidas en el círculo antártico, extendiéndose en las regiones montañosas de los trópicos; dos especies en el Neotrópico.

Reference List     (Last Modified On 3/2/2014)
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Plants small to somewhat medium sized, forming loose to dense soft mats, occasionally pendent, glossy green, yellowish-green to golden. Primary stems short, creeping, secondary stems spreading or pendent, 3–12 cm long, irregularly branched. Leaves complanate, appearing 2-ranked, ovate-oblong, conduplicate or deeply concave, 1.2–2 mm long, apex obtuse-rounded and short piliferous to mucronate or emarginate, tips often reflexed, base slightly auriculate; margins plane, entire; costae variable, absent or short, either forked or rarely single; median cells linear-vermicular, rather thick-walled, smooth; alar region undifferentiated. Dioicous. Perichaetia lateral. Setae elongate, to 9.5 mm long, smooth. [Capsules erect to inclined, urn oblong-cylindrical, 1.6–1.7 mm long, ± asymmetric, opercula short-rostrate; peristome double, exostome teeth 16, cross-striate below, papillose distally; endostome lightly papillose, basal membrane high, segments 16, keeled and perforate, cilia 1–3. Calyptrae cucullate, smooth and naked. Spores spherical, finely papillose.]

 

Plantas pequeñas hasta algo medianas, formando matas suave laxas hasta densas, rara vez pendientes, verde brillantes, verde-amarillentas hasta doradas. Tallos primarios cortos, reptantes, tallos secundarios patentes o pendientes, 3–12 cm de largo, 3 mm de ancho, irregularmente ramificados. Hojas comprimidas, en apariencia 2-filas, hasta 1.8 mm de largo, ovado-oblongas, conduplicadas o profundamente cóncavas, 1.2–2 mm de largo, ápice obtuso-redondeado y corto pilífero hasta mucronado o emarginado, extremos a menudo reflexos, base escasamente auriculads; márgenes planos, enteros; costa variable, ausente o corta, bifurcada o rara vez simple; células mediales lineo-vermiculares, lisas; región alar indiferenciada. Dioicas. Periquecios laterales. [Setas alargadas, hasta 9.5 mm de largo, lisas. Los esporofitos no han sido observados en Bolivia [Cápsulas erectas hasta inclinadas, urna oblongo-cilíndrica, opérculo corto-rostrado, peristoma doble. Caliptra cuculada, lisa y desnuda. Esporas esféricas, finamente papilosas.]

 

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1. Leaf apices piliferous-recurved … C. brevicaudatum
1. Leaf apices mucronate or emarginate … C. emarginatum
 
1. Ápices de las hojas pilifero-recurvados … C. brevicaudatum
1. Ápices de las hojas mucronados o emarginados … C. emarginatum
 
 
 
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